%0 Journal Article %A Pavel Guerzhoy %T A note on quadratic congruences. %J Manuscripta mathematica %D 1997 %P 89-94 %V 94 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1997__94_2_156325/ %F MM2_1997__94_2_156325